303 citations · 665 across the 14 of their papers we have counts for
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More Exact Tunneling Solutions in Scalar Field Theory
Koushik Dutta, Cecelie Hector, Pascal M. Vaudrevange +1
We present exact bounce solutions and amplitudes for tunneling in i) a piecewise linear-quartic potential and ii) a piecewise quartic-quartic potential. We cross check their correc…
The Overshoot Problem in Inflation after Tunneling
Koushik Dutta, Pascal M. Vaudrevange, Alexander Westphal
We show the absence of the usual parametrically large overshoot problem of small-field inflation if initiated by a Coleman-De Luccia (CDL) tunneling transition from an earlier vacu…
An Exact Tunneling Solution in a Simple Realistic Landscape
Koushik Dutta, Pascal M. Vaudrevange, Alexander Westphal
We present an analytical solution for the tunneling process in a piecewise linear and quadratic potential which does not make use of the thin-wall approximation. A quadratic potent…
Improved constraints on cosmological parameters from SNIa data
M. C. March, R. Trotta, P. Berkes +2
We present a new method based on a Bayesian hierarchical model to extract constraints on cosmological parameters from SNIa data obtained with the SALT-II lightcurve fitter. We demo…